I'm not sure what the earth being solid or hollow has to do with this. If you're on the surface of a ball, you can only project a laser / straight line over the hemisphere above you; not through the ground.

As an example, if you're at the North Pole and the South Pole base fires a ballistic missile at you, you can't aim a laser at it, as it would diametrically intersect the Earth.

Instead, you have to wait until the missile passes your horizon. The point at which it does this depends on its altitude. Hypersonic vehicles attempt to make interception harder by reentering the atmosphere from space earlier than a traditional ICBM, and travelling at a lower altitude in their final phase.